SCIENCE BEHIND LACROSSE

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Transcript of SCIENCE BEHIND LACROSSE

SECOND LAW:F=MAThe force of the stick on the ball = the mass of stick x the acceleration of the motion of the stick.F=MAForce of the ball in the air = mass of ball x acceleration of the ball from the force of the throw.THIRD LAW: EAQAL AND OPPISITE FORCES NEWTON'S LAWSINERTIALacrosse is a contact sport in witch players use sticks with netted pockets in which the ball is held by "cradling".SCIENCE BEHIND LACROSSEFIRST LAW: INERTIA Inertia results in motion, action, and effort.INERTIA - This friction increases with stretching because it then travels along a larger distance.When catching the ball in the pocket of the stick, the ball pushes back on the stick. In order for the player to not lose control of the stick and ball, the player must push back with an equal force on the stick. INTRODUCTION The players pass the ball back and fourth in order to throw the ball at the net to score.Players can use their bodies to "check" or impede other players on the field.Lacrosse is a sport in which many basic concepts of physics are utilized and apply to the differing elements of the game.The ball is at rest for the face off and it will remain at rest until acted upon by a players stick.Force on the stick forward = the force which is exhausted by the mesh stretching and exhausted by friction with the mesh.- This motion and acceleration depends on the strength and ability of the player. Force of moving player = the mass of player x acceleration of player from the strength of muscles to push off the ground to run. SHOOTING AND PASSINGPASSING KE=1/2M x V^2The more KE the thrown ball has, the greater the distance will travel Offensive players want sticks that will allow the ball to be thrown from the defensive end of the field to the offensive end of the field PASSING The shorter and lighter the sticks are the best because mass is decreased with a shorter length so the stick and ball's velocity increases, which increases KE.SHOOTINGA shot or pass is a rotary motion affected by the kinetic chain of segments that remain the same with the body from planting one foot and swinging the stick SHOOTING QUICKQUIZ1) How does passing the ball relate to velocity?2) What is Inertia ?INERTIA: The property of matter by which it retains its state of rest or its velocity along a straight line as it is acted upon by an external force.3) What is the equation for Kinetic Energy ?DEFENSEForce the player's moves to be lateral and away from the net.By keeping the player away from the net you not only cut down their angle on the goal, but also prevent them from gaining forward momentum.SOURCEShttp://jocelyn921.glogster.com/physics-of-lacrosse/http://www.unc.edu/~borbas/physics/sources.htmlBy:Hunter Hutchingshttp://www.athleticedgelacrosse.com/science.html Momentum ; p=mv

The forward momentum of the player would directly contribute to the momentum of the ball as the ball is part of the overall system.